(IDAHO FALLS, ID) – One person is dead after an apartment fire in Idaho Falls early Saturday. Crews responded to the scene on the 1400 block of Alice Avenue at around 7 a.m. Officials say a woman in her 50s, whose name has not been released, passed away alongside her dog. The cause of the fire is not yet known, but the flames did not spread to the apartments next door. Firefighters stayed at the scene for about four hours to ensure that the fire didn’t relight. An investigation is ongoing.